Flexible or pliable container



Jan. 4, 1944. SILVEYRA 2,338,604

FLEXIBLE OR PLIABLE CONTAINER Filed Jan. 22, 1942 2 Sheets-Sheet 1 Jan.4, 1944. R. SILVEYRA FLEXIBLE OR PLIABLE CONTAINER Filed Jan. 22. 1942 2Sheets-Sheet 2 'ZZa-raa 537. 1 WQM/ Patented Jan. 4, 1944 UNITED STATESPATENT OFFICE FLEXIBLE R PLIABLE CONTAINER Ricardo Silveyra, BuenosAires, Argentina Application January 22, 1942, Serial No. 427,829

3 Claims.

The present invention relates to hermetical containers and moreparticularly to containers comprising an internal body made principallyof a soft or pliable material, and an external casing made of a stiffmaterial which constitutes a protective enclosure or covering for theformerly mentioned internal container.

Containers enclosed by protective coverings are already known and havealready been used, but the majority of these have proved to lackhermetical properties sufficient to avoid, not only external leakage,but also leakage between the internal and external containers, thusrendering it almost impossible to eliminate the troubles caused thereby,particularly in connection with liquid and the like containers.

It is a well known fact that the great majority of this type ofcontainer use the particular structure built up by directly mounting onebody inside the other, which requires the use of a separate sealingdevice 'for each container, and other complicated elements for securingtherequisite tightness, which elements, however, not always avoid theinternal leakage likely to occur during transportation.

In accordance with the present invention the container is soconstructed, that as a main feature it will comprise a single unitdevice providing a seal which will afford complete sealing effect bothin the direct access to the inner pliable container and in the relationthereof with the outer protective casing.

A further object of the present invention is to provide an embodimentwhich, with the use of a plug secured to the top portion of the outercasing, will firmly hold the neck of the inner pliable container thusmaking it possible to fill and seal the said container Without the useof any special holding or retaining means.

Yet another object of the present invention is to make the innercontainer hermetical, in relation to the outer body, with the use of aringshaped gasket which does not interfere with the direct access forfilling and emptying the internal container.

A further object of this invention is to produce solid and cheapcontainers by using cardboard or any other similar material, to replacetinplate in the construction of the side walls, and to provide suchcontainers, internally, with materials that will keep unchanged theproducts contained while remaining unafifected by said products.

A still further object of this invention is to provide a container inwhich the walls of the inner pliable bag, will be independent from theouter covering that encloses it, for the purpose of avoiding any damagethat might be caused to the walls of the inner container resulting fromblows or similar undesirable effects that may injure the outer casing.

Other advantages and features of the present invention will be apparentin the course of the complete specification that follows; for a betterunderstanding of the invention, various views in the accompanyingdrawings illustrate by way of example, one of the preferred forms ofcarrying it into practice.

In the drawings:

Fig. 1 is a section of the top portion of the outer casing and pliablebag, with the plug and neck respectively disconnected, but disposed inalignment for fixing the latter in the former.

Fig. 2 is a section of the top portion of the container in itsembodiment, showing how the plug and the neck are coupled together forforming a single unit ready for receiving the liquid or other product tobe contained within the vessel.

Fig. 3 is a section of the container fulland sealed.

Through all the figures of the drawings, the same letters and numeralsof reference indicate same or equivalent parts.

With reference to thedrawings, a is the flexible or pliable bag whichmay be made of a thin sheet of synthetic rubber, rubber impregnatedwebbing or any other suitable material.

The said pliable bag a is placed or enclosed Within the casing b,provided with side walls I made of cardboard or any other cheap suitablematerial, while the upper part 2 and bottom part 3 are made, preferably,of tinplate.

Both upper and bottom parts 2 and 3, respectively, have their outeredges strongly pressed against the walls I, as shown in Fig.'3, thusconstituting casing b, a solid structure for affording a properprotection to the bag a.

As can be readily seen, the upper part 2 is highly concave in shape andis provided at its central portion, with the plug b which at its innersurface presents a threaded portion 4.

Threaded portion 4 has its entrance at the underside for receiving theneck a and abuts providing an annular seat 5, intended to receive aring-shape gasket 6. Finally, the plug b has an upper opening or mouth Iprovided with a lip or salient flange 8 which, as shown in Figs. 1 and2, is slightly bent outward so as to form a sealing surface for the lid9 which is applied by diestamping or otherwise.

Neck a is for-med of a double wall where the abutting neck IU of the bag2 is inserted, it being readily understood that both walls of the neck aperform a pressing action that holds the abutting neck I0, thusproviding a liquid-tight joint. Under such conditions, neck a may beconsidered to constitute an integral part with the bag a.

The neck a of bag a has a threaded portion I I which coincides with thethreaded portion 4 of the plug-b and, as it appears in the relativepositions of Figs. 1 and 2, neck a is inserted through the inner part ofplug b in such a way that, once threaded into position, the neck abecomes coupled within the plug b.

When neck a is driven into the threaded portion 4 of plug b, the upperedge I2 of neck a is from passing between the walls of casing b and thebag a. N

Once the neck a is inserted between the plug b' both form a single body.

The neck a being threaded in the internal position of plug b, themounting of casing b must be accomplished at the end of the assemblingoperation; explained otherwise, the bag a is secured firstly to the necka and then threaded on to the plug b. After completing these operations,casing b is formed by die-stamping or otherwise joining the upperportion 2 and the bottom portion 3 to the walls I, thus forming bag a asseen in Fig. 2.

The container thus formed has a single opening 1 for the whole device,such opening being provided by the joining of the neck a and the plug bas described. Opening I, as is obvious. gives access to the internalspace enclosed by the flexible or pliable bag a.

It is through said opening I that the container is filled being thenfinally sealed by means of the lid or cap 9 which is provided with afixing flange 9' for being die-pressed or otherwise secured to the lipor edge 8 of opening I. Cap 9 may be made to produce hermetic closingefi'ect with the use of a packing such as l3.

Briefly stated, the invention comprises an outer casing of stiffmaterial, acting as a protective covering for a bag or the like made ofa flexible or pliable material thereby enclosed, the device beingcharacterized in that the bag has a neck practice, but without departingfrom the scope thereof which is more clearly set forth in the appendedclaims.

Having now particularly described and ascertained the nature of thisinvention and how the same is to be performed, I declare that what Iclaim is:

1. In combination, a pliable bag having a neck at the top thereof, ahollow plug having spaced inner and outer walls for receiving said necktherebetween, the outer wall having external threads thereon, aprotective casing member, a hollow plug element on said casing memberhaving lower and upper portions, said lower portion having internalthreads for engaging said external threads, and a leakage proof packingbetween said upper portion and the first-mentioned plug.

2. In combination, a pliable bag having a neck at the upper end thereof,a hollow plug member having spaced inner and outer walls for receivingsaid neck therebetween, a protective casing having a hollow plug memberfor surrounding the first-mentioned plug member, leak-proof couplingmeans between said plug members, and an outwardly flanged lip at themouth of one of said members for receiving a chucked lid,

3. In combination, a pliable bag having a neck, a hollow plug havingspaced inner and outer walls for receiving said neck therebetween, theouter wall having threads on the exterior thereof, a protective casingmember having a hollow plug, the last-mentioned plug comprising lowerand upper portions, threads on interior of said lower portion forengaging said external threads, said upper portion having an internalflange overlying the upper end of the first mentioned plug, and apacking seal engaged between said flange and said upper end.

RICARDO SILVEYRA.

